Sanitary Butterfly Valve Test
Sanitary butterfly valves are used in the food and beverage industry for the connection or control of fluid and semi-fluid material transportation pipelines.
It can effectively ensure the hygienic quality of materials in the conveying process. At the same time, it is also easy to clean and disinfect, thus maintaining the cleanliness of the pipeline.
Bubble method
After pressurizing the valve with gas, it is immersed in the liquid.
The gas will escape from any leak and form bubbles in the surrounding liquid. The position of the bubbles indicates the location of the leak
Soap Bubble Method
After pressurizing the valve with gas, apply a soap solution to the area of possible leakage.
The formation of soap bubbles indicates a leak. This method usually requires manual observation and judgment of the size of the bubbles.
Hydrostatic method
Fill the valve with water and then pressurize it. Observe if water leaks from any part of the valve.
Pressurization method
Connect the compressor to the valve to pressurize. After reaching a certain pressure, stop pressurizing,
close the valve and monitor for a period of time. A sharp pressure drop indicates a serious leak,
while a minimal or no change in pressure drop indicates a small or no leak. Pressure gauges are usually used to observe pressure changes.
Ultrasonic detection method
Using an ultrasonic detector to check for leaks based on instrument readings.
Inverter technology converts the ultrasonic signal into a sound that can be heard by the human ear.
For steam safety valves, spectrum/amplitude display analysis software can help observe changes in the ultrasonic signal to detect steam leaks.
